The effects of the condenser pressure drop on the cooling performance of an air conditioning unit using R-410A

Sunardi, Cecep; Markus,; Setyawan, Andriyanto

doi:10.1063/1.5049966

Cited by 3 publications

(1 citation statement)

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“…However, due to the increase in the nanofluid’s viscosity, the pressure drop can be escalated, especially for low mass flow rates [ 503 , 504 ]. In AC&R systems, the pressure drop is an important factor that needs to be incorporated during the system design phase because any additional increase in the pressure drop in the heat exchangers during the operation of the AC&R system will result in significant degradation in the system COP performance as reported by Sunardi et al [ 505 ] and Tashtoush et al [ 506 ]. Yet, pressure drop due to a carbon-based nanofluids additive has not been studied in AC&R systems and needs to be further investigated.…”

Section: Discussion and Future Directionsmentioning

confidence: 99%

Carbon-Based Nanofluids and Their Advances towards Heat Transfer Applications—A Review

et al. 2021

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Nanofluids have opened the doors towards the enhancement of many of today’s existing thermal applications performance. This is because these advanced working fluids exhibit exceptional thermophysical properties, and thus making them excellent candidates for replacing conventional working fluids. On the other hand, nanomaterials of carbon-base were proven throughout the literature to have the highest thermal conductivity among all other types of nanoscaled materials. Therefore, when these materials are homogeneously dispersed in a base fluid, the resulting suspension will theoretically attain orders of magnitude higher effective thermal conductivity than its counterpart. Despite this fact, there are still some challenges that are associated with these types of fluids. The main obstacle is the dispersion stability of the nanomaterials, which can lead the attractive properties of the nanofluid to degrade with time, up to the point where they lose their effectiveness. For such reason, this work has been devoted towards providing a systematic review on nanofluids of carbon-base, precisely; carbon nanotubes, graphene, and nanodiamonds, and their employment in thermal systems commonly used in the energy sectors. Firstly, this work reviews the synthesis approaches of the carbon-based feedstock. Then, it explains the different nanofluids fabrication methods. The dispersion stability is also discussed in terms of measuring techniques, enhancement methods, and its effect on the suspension thermophysical properties. The study summarizes the development in the correlations used to predict the thermophysical properties of the dispersion. Furthermore, it assesses the influence of these advanced working fluids on parabolic trough solar collectors, nuclear reactor systems, and air conditioning and refrigeration systems. Lastly, the current gap in scientific knowledge is provided to set up future research directions.

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Section: Discussion and Future Directionsmentioning

confidence: 99%

Carbon-Based Nanofluids and Their Advances towards Heat Transfer Applications—A Review

et al. 2021

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Performance of a split air conditioner under different refrigerant pipe length

Setyawan¹,

Mitrakusuma²,

Najmudin³

2023

5th International Conference on Electrical, Electronic, Communication and Control Engineering (Iceecc 2021)

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Performance Evaluation of Split Air Conditioner with Consideration of Pressure Drop in Evaporator and Condenser

Mishra¹,

Soni

Maheshwari

2022

Curr. World Environ

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In this research, a split air conditioner's performance has been evaluated using exergy analysis on three different low global warming potential (GWP) refrigerants, namely R32, R447A, and R447B, to find a replacement for the GWP-high refrigerant R410A. With regard for pressure loss in the evaporator and condenser, a computational model is built to recreate the operational conditions of a split air conditioner. GENETRON Properties 1.4 software is used to calculate performance metrics such as coefficient of performance (COP), exergy destruction ratio, exergetic efficiency, and efficiency defect. Result shows that pressure drop in evaporator alone has an adverse effect on COP and total exergy destruction and it is higher at higher pressure drop. Effect of pressure drop on exergetic efficiency and exergy destruction ratio is found to be less significant with condenser pressure drop compared to evaporator pressure drop. Exergy efficiency is found to be maximum with R447A followed by R447B, R32, and R410A.

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The effects of the condenser pressure drop on the cooling performance of an air conditioning unit using R-410A

Cited by 3 publications

References 1 publication

Carbon-Based Nanofluids and Their Advances towards Heat Transfer Applications—A Review

Carbon-Based Nanofluids and Their Advances towards Heat Transfer Applications—A Review

Performance of a split air conditioner under different refrigerant pipe length

Performance Evaluation of Split Air Conditioner with Consideration of Pressure Drop in Evaporator and Condenser

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